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inet_diag: Generalize inet_diag dump and get_exact calls

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Introduce two callbacks in inet_diag_handler -- one for dumping all
sockets (with filters) and the other one for dumping a single sk.

Replace direct calls to icsk handlers with indirect calls to callbacks
provided by handlers.

Make existing TCP and DCCP handlers use provided helpers for icsk-s.

The UDP diag module will provide its own.

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pavel Emelyanov
2011-12-09 06:23:18 +00:00
committed by David S. Miller
parent 3c4d05c805
commit 1942c518ca
4 changed files with 51 additions and 8 deletions
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18
include/linux/inet_diag.h
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@@ -138,9 +138,18 @@ struct inet_hashinfo;
struct nlattr;
struct nlmsghdr;
struct sk_buff;
struct netlink_callback;
struct inet_diag_handler {
struct inet_hashinfo *idiag_hashinfo;
void (*dump)(struct sk_buff *skb,
struct netlink_callback *cb,
struct inet_diag_req *r,
struct nlattr *bc);
int (*dump_one)(struct sk_buff *in_skb,
const struct nlmsghdr *nlh,
struct inet_diag_req *req);
void (*idiag_get_info)(struct sock *sk,
struct inet_diag_msg *r,
void *info);
@@ -152,6 +161,13 @@ int inet_sk_diag_fill(struct sock *sk, struct inet_connection_sock *icsk,
struct sk_buff *skb, struct inet_diag_req *req,
u32 pid, u32 seq, u16 nlmsg_flags,
const struct nlmsghdr *unlh);
void inet_diag_dump_icsk(struct inet_hashinfo *h, struct sk_buff *skb,
struct netlink_callback *cb, struct inet_diag_req *r,
struct nlattr *bc);
int inet_diag_dump_one_icsk(struct inet_hashinfo *hashinfo,
struct sk_buff *in_skb, const struct nlmsghdr *nlh,
struct inet_diag_req *req);
int inet_diag_bc_sk(const struct nlattr *_bc, struct sock *sk);
int inet_diag_check_cookie(struct sock *sk, struct inet_diag_req *req);